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[0009]In accordance with the present invention, a method and system are provided for interactively displaying a three-dimensional rendering of a structure having a lumen wherein the rendering is effected by a an adaptive thresholding procedure. A three-dimensional volume of data is formed in a computer from a series of two-dimensional images acquired, for example, by a scanner such as CT-scanner. The acquired images represent at least one physical property associated with the three-dimensional object. A selected region of interest is segmented by the computer from the vo
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However, only about 1.5 million fiberoptic colonoscopies are performed each year.
Another problem is that conventional colonoscopies fail to provide access to the entire colon in approximately 15% of
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[0021]The present invention generally relates to a method and system, as schematically represented in FIGS. 1–4, for generating interactive, three-dimensional renderings of three-dimensional structures generally having a lumen. The structures are usually in the general form of selected regions of a body and in particular, human or animal body organs which have hollow lumens such as colons, blood vessels, and airways. In accordance with the present invention, the interactive three-dimensional renderings are generated in a computer-controlled process from a series of two-dimensional, cross-sectional images of the selected body organ acquired, for example, from a helical (computed tomography (CT) Scan. The three-dimensional renderings are interactive in that such renderings can be manipulated by a user on a visual display of a computer system, such as a computer monitor, to enable movement in, around and through the three-dimensional structure while simultaneously displaying multiplana...
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Abstract
A computer system and a computer-implemented method are provided for interactively displaying a three-dimensional rendering of a structure having a lumen and for indicating regions of abnormal wall structure. A three-dimensional volume of data is formed from a series of two-dimensional images representing at least one physical property associated with the three-dimensional structure. An isosurface of a selected region of interest is created by a computer from the volume of data based on a selected value or values of a physical property representing the selected region of interest. A wireframe model of the isosurface is generated by the computer wherein the wireframe model includes a plurality of vertices. The vertices are then grouped into populations of contiguous vertices having a characteristic indicating abnormal wall structure by the computer. The wireframe model is then rendered by the computer in an interactive three-dimensional display to indicate the populations of abnormal wall structure.
Description
RELATED APPLICATION[0001]This application is a continuation of application Ser. No. 09 / 299,061, entitled “Automatic Analysis in Virtual Endoscopy”, filed on Apr. 23, 1999, now issued as U.S. Pat. No. 6,366,800, which in turn is a continuation of application Ser. No. 08 / 805,584, entitled “Automatic Analysis in Virtual Endoscopy”, filed on Feb. 25, 1997, now issued as U.S. Pat. No. 5,920,319, which in turn is a continuation-in-part of application Ser. No. 08 / 331,352, filed on Oct. 27, 1994, now issued as U.S. Pat. No. 5,782,762, which are each incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to a system and method for interactively displaying a three-dimensional rendering of a structure having a lumen and, more particularly, to a system and method for automatically analyzing such structures for potential abnormalities.BACKGROUND OF THE INVENTION[0003]For many forms of cancer, early detection is essential for a favorable prognosis. A cancerous ...
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